this excellent video has brought my attention to Playstation controllers specifically for kids' games (there's a variant of the dog controller that's Hello-Kitty-themed too!) so I'm checking Japanese auction sites for other interesting things https://youtu.be/BOGbDgO3Pfo
a simplified controller that lets kids play games without having to manage 12 different buttons is a great idea, and the game he's playing seems really cool too, really putting all the space on that CD to good use with voice acting and animations